A prospective randomized study of the usefulness of a small caliber colonoscope compared with a standard colonoscope during the insertion of the colonoscope into the cecum.

A prospective randomized study of the usefulness of a small caliber colonoscope compared with a standard colonoscope during the insertion of the colonoscope into the cecum. - A prospective randomized study of the usefulness of a small caliber colonoscope compared with a standard colonoscope during the insertion of the colonoscope into the cecum.

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000005341

Enrollment

320

Registered

2011-03-30

Start date

2010-03-01

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

colorectal disease

Interventions

small caliber colonoscope(PCF-Y0005L/I, Olympus, Tokyo, Japan) standard colonoscope(CF260AI, Olympus, Tokyo, Japan)

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: patient to recieve colonoscopy

Exclusion criteria

Exclusion criteria: 1, Patient with prior colonic resection 2, Inflammatory bowel disease 3, Obstructive colonic disease 4, Patient with severe hematochezia 5, Patient with dementia

Design outcomes

Primary

Measure	Time frame
Patient pain	—

Secondary

Measure	Time frame
Cecal intubation rate Intubation time to cecum Complication rate	—

Countries

Japan

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026